Losses and Loss Expenses Payable Losses and Loss Expenses Payable (Tables)

9 Months Ended

Sep. 30, 2020

Losses and Loss Expenses Payable [Abstract]

Schedule Of Activity In Liability For Unpaid Losses And Loss Adjustment Expenses Table [Table Text Block]

The following table sets forth the activity in the liability for losses and loss expenses for the nine months ended September 30, 2020 and 2019:

($ millions)	2020		2019
Losses and loss expenses payable, at beginning of period	$	1,066.5	$	1,146.8
Less: reinsurance recoverable on losses and loss expenses payable	13.6		5.5
Net balance at beginning of period	1,052.9		1,141.3
Incurred related to:
Current year	779.8		692.7
Prior years	(17.6)		(55.1)
Total incurred	762.2		637.6
Paid related to:
Current year	420.8		366.4
Prior years	338.2		327.0
Total paid	759.0		693.4
Net balance at end of period	1,056.1		1,085.5
Plus: reinsurance recoverable on losses and loss expenses payable	35.2		7.2
Losses and loss expenses payable, at end of period	$	1,091.3	$	1,092.7